Costs, Scale Of Production And Break-Even Analysis (Copy)

4.2.1 Identify and classify costs

• Fixed costs (FC)
  • Do not change with output.
  • Examples: rent, salaries, insurance, machinery.
• Variable costs (VC)
  • Change with level of output.
  • Examples: raw materials, direct labour, packaging.
• Total costs (TC)
  • TC = FC + VC.
• Average cost (AC)
  • AC = TC ÷ Output.
  • Useful to see cost per unit.
• Decision making with cost data
  • If selling price < average cost → loss → may stop production.
  • If selling price > average cost → profit → continue production.
  • Helps identify break-even and profitability.

Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change O Level And IGCSE Business Studies Full Scale Course

4.2.2 Economies and diseconomies of scale

• Economies of scale (EOS) = cost advantages as business grows.
  • Purchasing economies: bulk buying reduces input cost.
  • Marketing economies: advertising cost spread over more units.
  • Financial economies: easier to get loans at lower interest.
  • Managerial economies: specialist managers increase efficiency.
  • Technical economies: use of advanced machinery lowers unit cost.
• Diseconomies of scale (DEOS) = disadvantages of too large a business.
  • Poor communication: messages get distorted in large firms.
  • Low employee motivation: workers feel less valued.
  • Weak coordination: difficult to manage large-scale operations.
  • Leads to higher average costs.

Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change O Level And IGCSE Business Studies Full Scale Course

4.2.3 Break-even analysis

• Concept
  • Break-even = when Total Revenue (TR) = Total Costs (TC).
  • No profit, no loss.
• Formulas
  • Break-even output = Fixed costs ÷ Contribution per unit.
  • Contribution per unit = Selling price – Variable cost per unit.
  • Margin of safety = Actual sales – Break-even sales.
• Break-even chart
  • X-axis: Output (units).
  • Y-axis: Costs and revenue.
  • Lines:
    • Fixed costs = horizontal line.
    • Total costs = FC + VC.
    • Total revenue = price × output.
  • Break-even point = where TR = TC.
• Interpretation
  • Left of break-even → loss area.
  • Right of break-even → profit area.
  • Margin of safety shows risk (larger margin = safer).
• Using break-even analysis
  • Decide if business idea is viable.
  • Assess effect of price change, cost change, or demand change.
• Limitations
  • Assumes all output is sold.
  • Assumes fixed costs remain constant.
  • Only applies to single product firms.
  • Ignores external factors like demand shifts, competition, inflation.

Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change O Level And IGCSE Business Studies Full Scale Course

Quick Recap Keywords

• Fixed cost: rent, salaries.
• Variable cost: raw materials, wages.
• EOS: purchasing, marketing, financial, managerial, technical.
• DEOS: communication, motivation, coordination.
• Break-even formula: FC ÷ (SP – VC).
• Margin of safety: actual – break-even sales.

Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change O Level And IGCSE Business Studies Full Scale Course